LifeLock.com 400

Todd Warshaw, Getty Images

Tony Stewart, driver of the #14 Office Depot "Back to School" Chevrolet, leads a group of cars during the NASCAR Sprint Cup Series LifeLock.com 400 at Chicagoland Speedway on July 11, 2009 in Joliet, Illinois.

Tony Stewart, driver of the #14 Office Depot "Back to School" Chevrolet, leads a group of cars during the NASCAR Sprint Cup Series LifeLock.com 400 at Chicagoland Speedway on July 11, 2009 in Joliet, Illinois. (Todd Warshaw, Getty Images)

Tony Stewart, driver of the #14 Office Depot "Back to School" Chevrolet, leads a group of cars during the NASCAR Sprint Cup Series LifeLock.com 400 at Chicagoland Speedway on July 11, 2009 in Joliet, Illinois.